Table 2. Chemical Compositions of Ash Samples.

chemical compositions (%)	masson pine (M)	20B:80M	40B:60M	60B:40M	80B:20M	bamboo (B)
MgO	4.98	9.19	10.9	11.8	13.2	14.2
Al2O3	8.53	4.22	2.26	1.66	1.09	0.767
SiO2	21.8	16.1	15.4	17.6	18.6	19.7
P2O5	2.31	3.10	3.85	4.22	4.62	5.09
SO3	3.79	5.38	6.71	7.40	7.70	7.97
K2O	9.84	21.2	29.0	34.0	38.2	41.7
CaO	31.5	29.0	24.8	17.9	11.4	5.64
MnO	2.29	2.33	2.41	2.24	1.89	2.03
Fe2O3	11.1	6.02	3.07	1.66	1.28	0.781
ZnO	0.329	0.304	0.313	0.338	0.344	0.310
TiO2	1.71	0.738	0.278	0.213	0.181	0.209
Cl	0.126	0.332	0.461	0.749	0.825	1.20